干旱区生态环境知识资源中心(Arid): 19602012年内蒙古降水集中度和降水集中期时空变化

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	19602012年内蒙古降水集中度和降水集中期时空变化
其他题名	Spatio-temporal Variations of Precipitation Concentration Degree and Precipitation Concentration Period in Inner Mongolia
	任志艳; 延军平; 王鹏涛
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2016
卷号	36 期号:3 页码:760-766
中文摘要	利用内蒙古46个气象台站19602012年逐日降水数据,以表征降水年内分配非均匀特征的降水集中(PCD)和降水集中期(PCP)指标,分析了内蒙古降水年内时间分配特征及变化趋势。结果表明:(1)近53 a内蒙古PCD平均值为0.70,呈显著减少趋势。PCP平均值为194.65°,呈不显著的提前趋势。(2)PCD高值区在阿拉善高原、锡林郭勒高原东部、呼伦贝尔高平原、大兴安岭以东地区,低值区在大兴安岭北部、乌兰察布高原、鄂尔多斯高原。全区PCP则以192°等值线为界,表现出西晚东早的空间分异格局。(3)PCD普遍呈下降趋势,以呼伦贝尔高平原、乌兰察布高原减小趋势最显著。PCP也以提前趋势为主,贺兰山、乌兰布和沙漠一线以东地区为主要的PCP提前区。(4)各站PCD与年降水量均为正相关,通过显著性检验的站点占到了60.8%。PCP与降水量的相关系数较小,显著相关的地区仅占到全区的34.7%。
英文摘要	Based on the daily precipitation data of the 46 meteorological stations in Inner Mongolia from1960 to 2012,the inhomogeneity characteristics of annual precipitation and its trend during 1960-2012 in Inner Mongolia was analyzed by applying the Precipitation Concentration Degree(PCD)and Precipitation Concentration Period(PCP).The result showed that:(1)In recent 53 a,the mean PCD of Inner Mongolia was 0.7,with an apparent decreasing trend in Inner Mongolia;while the PCPin Inner Mongolia was 194.65°, showing an insignificant declined trend.(2)The area of high PCD value was mainly distributed in Alxa Plateau,the eastern part of XilinGol Plateau,Hulunbuir upland plain and the eastern areas of Greater Hinggan, while the low value centers lay in the northern areas of Greater Hinggan,Wulanchabu plateau and Ordos Plateau.Divided by the PCPcontour line of 192°,the PCPin the whole area showed an obvious spatial difference,and the west is high while the east is low.(3)The PCDin Inner Mongolia showed a decreasing trend,especially in Hulunbuir upland plain and Ulanchap plateau.The PCPalso showed a decreasing trend, indicating that the PCPappears earlier in the east of Helan Mountain and Ulan Buh Desert line.(4)PCD of all stations had a highly positive correlation with annual precipitation,and60.8%of the stations passed statistically significant test,while PCP of all stations had low positive correlation with annual precipitation, merely with the area of 34.7%passed significant test.
中文关键词	内蒙古 ; 时空变化 ; 降水集中度 ; 降水集中期
英文关键词	Inner Mongolia spatio-temporal variations precipitation concentration degree precipitation concentration period
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:5743638
来源机构	陕西师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235421
作者单位	陕西师范大学旅游与环境学院, 西安, 陕西 710119, 中国
推荐引用方式 GB/T 7714	任志艳,延军平,王鹏涛. 19602012年内蒙古降水集中度和降水集中期时空变化[J]. 陕西师范大学,2016,36(3):760-766.
APA	任志艳,延军平,&王鹏涛.(2016).19602012年内蒙古降水集中度和降水集中期时空变化.中国沙漠,36(3),760-766.
MLA	任志艳,et al."19602012年内蒙古降水集中度和降水集中期时空变化".中国沙漠 36.3(2016):760-766.